Antenna



FIG. 1 is a front, left perspective view of an antenna showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a rear, right perspective view thereof; and

FIG. 9 is a rear, bottom, right perspective view thereof;

FIG. 10 is a front, right, bottom perspective view of a second embodiment of an antenna showing our new design;

FIG. 11 is a front elevational view thereof;

FIG. 12 is a rear elevational view thereof;

FIG. 13 is a right side view thereof;

FIG. 14 is a left side view thereof;

FIG. 15 is a top plan view thereof;

FIG. 16 is a bottom plan view thereof;

FIG. 17 is a rear, left perspective view thereof; and

FIG. 18 is a rear, bottom perspective view thereof;

FIG. 19 is a front, right, bottom perspective view of a third embodiment of an antenna showing our new design;

FIG. 20 is a front elevational view thereof;

FIG. 21 is a rear elevational view thereof;

FIG. 22 is a right side view thereof;

FIG. 23 is a left side view thereof;

FIG. 24 is a top plan view thereof;

FIG. 25 is a bottom plan view thereof;

FIG. 26 is a rear, left perspective view thereof; and,

FIG. 27 is a rear, bottom perspective view thereof. 

CLAIM The ornamental design for an antenna, as shown and described. 